Tablet Command's work timers represent an approximation of air status. An individual work timer starts for any unit that has been given an assignment. Colored LEDs degrade from green to red over a designated period of time that you can configure. The default countdown starts at 20 minutes but you can make it as long as 24 hours.
You can adjust the configuration from any screen. Start by tapping the settings icon in the lower left corner of the screen. Tap Work Time to expose visual indicators for 100%, 75%, 50%, and 25%. Select the desired timing for each visual indicator then tap Save. These indicators apear and change based on time since deployment while managing incidents in Tablet Command.